...precisely. (http://www.pgccphy.net/1020/phy1020.pdf Theory: | | | Acceleration due to gravity The value of 9.8m/s/s acceleration is given to a free falling object, directing downwards towards Earth. Any object moving solely under the influence of gravity is known as acceleration of gravity and this vital quantity is denoted by Physicians as the symbol g. (http://www.physicsclassroom.com/class/1DKin/Lesson-5/Acceleration-of-Gravity) Simple harmonic motion This is everyplace where the acceleration is proportional and opposite to displacement to the continuous amplitude from the position of equilibrium. Period The time that it takes to complete one full cycle of oscillation which is measured quantitatively Hooke’s law ‘Hooke’s law, law of elasticity discovered by the English scientist Robert Hooke in 1660, which states that, for relatively small deformations of an object, the displacement or size of the deformation is directly proportional to the deforming force or...
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...Research: The course textbook and different textbooks (S.Beichner, Fizik1, Ankara: Palme Yayınevi, 2002.), some laboratory experiments, which retrieved from the Internet, some lectures and videos comprise sources for the theoretical analysis of the experiment. -Prof. Walter Lewin (1999), Hooke's Law, Simple Harmonic Oscillator (online) (http://ocw.mit.edu/courses/physics/8-01-physics-i-classical-mechanics-fall-1999/video-lectures/lecture-10), -Combination of springs (online) (http://engineeronadisk.com/V2/book_modelling/engineeronadisk-10.html) -Sal Khan (2008), Intro to springs and Hooke's Law (online) (http://www.youtube.com/watch?v=ZzwuHS9ldbY) -Forces and elasticity (online) (http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa/forces/forceselasticityrev2.shtml) -Deformation of materials (online) (http://qatemplates.everythingscience.co.za/grade-12/07-mechanical-properties-of-matter/07-mechanical-properties-of-matter-02.cnxmlplus) Description of the experiment: This experiment, which will be conducted, involves two different parts. The first part will be the observation of different springs’ extensions under the influence of same mass and different masses. Hooke’s Law asserts that when a force applied to a spring, the...
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...AUSTRALIAN INTERNATIONAL SCHOOL 2332 Chino Roces Ext., Fort Bonifacio, Taguig, Philippines A Comparative Study of the Elastic Limit of Two Different Brands of Rubber Bands A Research Paper Presented to the Faculty of Australian International School In Partial Fulfillment of RAISE Program (Research in Australian International School for Excellence) Ramos, Anna Dominique A. Grade 10 School Year 2013 – 2014 TABLE OF CONTENTS TITLE PAGE i APPROVAL SHEET ii ACKNOWLEDGEMENT iii ABSTRACT iv CHAPTERS I. THE PROBLEM AND BACKGROUND OF THE STUDY Introduction 1 Conceptual Framework 2 Statement of the Problem 2 Hypothesis of the Study 3 Assumption of the Study 3 Significance of the Study 3 Scope and Limitation 4 Definition of the Terms 4 II. REVIEW OF RELATED LITERATURE Conceptual Literature 5 Research Literature 6 III. METHODOLOGY Research Design 7 Materials 8 Procedures 8 IV. PRESENTATION, ANALYSIS, AND INTERPRETATION OF DATA Table 4.1 9 Figure 4.1 10 V. CONCLUSION AND RECOMMENDATIONS Major Findings 11 Conclusion 11 Recommendation 11 REFERENCES 12 APPENDICES 13 Approval Sheet In partial fulfillment of the RAISED (Research in Australian International...
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...Psicológica (2010), 31, 647-657. The law of elasticity Alberto Cocco* & Sergio Cesare Masin University of Padua, Italy Participants estimated the imagined elongation of a spring while they were imagining that a load was stretching the spring. This elongation turned out to be a multiplicative function of spring length and load weight—a cognitive law analogous to Hooke’s law of elasticity. Participants also estimated the total imagined elongation of springs joined either in series or in parallel. This total elongation was longer for serial than for parallel springs, and increased proportionally to the number of serial springs and inversely proportionally to the number of parallel springs. The results suggest that participants integrated load weight with imagined elasticity rather than with spring length. Intuitive physics refers to the cognitive laws of our tacit knowledge of the ordinary physical world (Anderson, 1983; Lipmann & Bogen, 1923; McCloskey, 1983; Shanon, 1976; Smith & Casati, 1994; Wilkening & Huber, 2002). In the following we report an investigation of the intuitive physics related to Hooke’s law of linear elasticity. We begin with a description of this law. HOOKE’S LAW Consider a close-coiled helical spring with length L and external diameter D, suspended from a fixed support. After an object with weight W is suspended from the lower end of the spring, Hooke’s law says that the spring elongation (increment in L) is E = k0 + k · W (1) with k0 a measurement error...
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...PHY11 Lesson 7 ELASTICITY ELASTICITY The ability of a strained body to recover its size and shape after deformation. stress – characterizes the strength of forces causing the deformation. F stress A in 2 or pascal (Pa) strain – the resulting deformation. Hooke’s Law: stress elastic mod ulus strain 3 Types of Stress tensile or compressive stress – changes the length of a strained body. tensile stress bulk stress – changes the volume of a strained body. bulk stress shear stress – opposite forces act at different points in the body. shear stress Tensile and Compressive Stress Consider a body of initial length lo acted upon by a tensile or compressive force of F. F stress A l strain lo Young’s Modulus (Y) F stress A Y strain l l o Flo Y Al Example 1 Bulk Stress When uniform pressure p acts on a body, the volume of the body decreases. F pressure stress A V strain Vo F stress A B strain V V o Bulk Modulus (B) p B V V o B p V Vo Example 2 Shear Stress and Strain When equal and opposite forces act tangent to the opposite sides of a body, a shear strain is produced. F// stress A x strain h x h x tan h Shear Modulus (S) F// h S Ax F// S A tan Example 3 F// = 9.0 x 105...
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...spring constant of 30.30N/m. Results should have verified that the period of oscillation depended on the effective mass of the spring and the period of oscillation. Students recorded basic information such as the position of the mass before the spring is charged, the path of the mass, the peak of the oscillation, as well as the force the mass and the spring exert on each other. Data studio and a force sensor, and a position sensor was used to get accurate measurements of these values. Goal The purpose of this laboratory is to characterize the oscillation of a simple spring-mass system. Theory If a spring is stretched or compressed a small distance from its equilibrium position, the spring will exert a force on the body given by Hooke's Law, where is known as the spring force. The constant, , known as the spring constant, and is the displacement from the equilibrium position. The spring constant is a clue of the spring's strength. A large value for indicates that the spring is strong or stiff. A low value for means the spring is weak or flexible. Springs with large values can balance larger forces than springs with low values. The negative sign in indicates that the direction of is always opposite the direction of the displacement. The spring force is a restoring force. In other words, the spring force always acts to return the weight or body to the equilibrium position regardless of the direction of the...
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...CALCULATIONS & SPECIFICATIONS Well Casings Well Screens Well Accessories Calculations & Specifications Rossum Sand Tester Home > Water Well Products > Calculations & Specifications Collapse Strength Calculations The following collapse formulae provide the user practical tools to estimate collapse strengths of various types of casing and screen. It is important that one pays particular attention to the material and manufacturing standards for the casing and screen specified so that acceptable tolerances are considered and adequate safety factors applied. Collapse Strength of Steel Casing: Timoshenko's Formula, shown below, is commonly accepted to be the most accurate method available for estimating the collapse strength of steel pipe with diameter/thickness ratios common to those used in the construction of water wells. Where: Pcr = Theoretical collapse strength of a perfectly round tube Where: Pe = Collapse pressure with ellipticity (psi) E = Young's M odulus for Steel (3x107) u = Poisson's Ratio (0.3) Do = Outside diameter of casing (inches) t = Wall thickness (inches) S = Yield strength (mild steel = 35,000 psi) e = ellipticity, frequently assumed as 0.01 Perform Calc ulation Collapse Strength of Shutter Screen: Shutter Screen, sometimes referred to as Louver Screen, actually has a greater collapse strength than casing of the same diameter and wall thickness due to the corrugating effect of the louvers. As a result, shutter screen's collapse strength is...
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...LAWS AND FORMULAS THAT HAS DIRECT PRPORTION IN SCIENCE Henry's Law Henry's law is one of the gas laws formulated by William Henry in 1803. It states: "At a constant temperature, the amount of a given gas that dissolves in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid." An equivalent way of stating the law is that the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid. To explain this law, Henry derived the equation: C=kPgas Hooke's Law "Is proportional to" means "varies directly with", so the formula for Hooke's Law is "F = kd", where "F" is the force and "d" is the distance. Coulomb’s Law The magnitude of the electrostatic force of interaction between two point charges is directly proportional to the scalar multiplication of the magnitudes of charges and inversely proportional to the square of the distance between them. The force is along the straight line joining them. If the two charges have the same sign, the electrostatic force between them is repulsive; if they have different signs, the force between them is attractive. Newton's law of universal gravitation states that any two bodies in the universe attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance be wherein, Ohm’s Law states that the current through a conductor between...
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...Criminal Procedure Policy Order and liberty are two areas within criminal procedure that have tension among one another (book). Order is a stronger approach toward the criminal justice system than liberty. Liberty concerns an individual’s rights to due process, which means everybody deserves the same rights when arrested regardless of the circumstances such as poor person versus a rich person. The two models that were developed by Herbert Packer were the crime control model and the due process model (book). Both models have similarities as well as differences and not one is “good” and the other “bad” according to Packer. The two primary goals within the criminal justice system are the need to enforce law and maintain social order and the need to protect people from injustice (defenseinvestigator). The fourth, fifth, sixth, and fourteenth amendments play a signifigant role when analyzing both the due process model and the crime control model. This paper will further explore both models as well as how the models view the fourth, fifth, and sixth amendments and how the fourteenth amendment gives the same rights on a state level as well as federal. Crime Control Model The crime control model is a stern approach to the criminal justice system. As described by Hubert Packer, “the crime control model is like a conveyer belt, moving cases starting from arrest to conviction in a swift and fast process (Book).” Fact finding is what defines this model. If an officer makes an...
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...that breaks the Immigration Law should be punished, even if they are not citizens of the country. According to Perez (2001), “In 1986 Congress passed the Immigration Reform and Control Act that, among other things, granted amnesty to illegal immigrants who could demonstrate continual residence in the United States prior to 1982” (Perez, 2001). Because of this law, millions of illegal immigrants can use this act to become citizens of the United States. | According to Mirram-Webster (2012), “amnesty means that the act of an authority (as a government) by which pardon is granted to a large group of individuals” (Mirram-Webster, 2012). Therefore, amnesty is unfair and unconstitutional because all of the illegal immigrants that come into the United States are pardon after they have violated the laws in this country. Why do we continue to allow these illegal immigrants to go unpunished? If it were some of the U.S. citizens breaking this law they would not be granted amnesty; they would be treated differently, so why illegal immigrants should be pardoned? Robert Byrd (2001), a West Virginia senator, says, “Illegal immigrants who have worked for many years in the United States should not be granted amnesty” (Byrd, 2001). Illegal immigrants who work in the United States should be punished because they do not have green cards or permission from the United States to come to America. Although amnesty is an approved law, many peoples do not agree with this law. On the other hand, some Americans...
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...Few good man Time from time you may hear stories of abuse by the military justice "system". There are multiple destroyed and financially devastated families out there suffering heartbreak and loss at the hands of an uncaring, unfeeling and unjust process which makes a mockery of our Bill of Rights. Military justice for the majority is prefabricated according to the wishes of the local Commander, and the "trial" or "court-martial" is tantamount to a pre-ordained verdict of GUILTY. How could any court proceeding be considered fair when the "convening authority," by right of title, is given the power to select the judge, the jury and defense and prosecution attorneys? It may go "unsaid," but the implication is very clear - if the convening authority "sees fit" to bring about a court-martial, then the accused can be assumed to be guilty. What's special, or even topical, about A Few Good Men movie is it speaks to how military honor can be so readily suborned by the authoritarian impulse. And second, how the same honest pride - not to mention competence - is necessary to bring such posturing would-be tyrants to justice. The main issue the movie touches upon is military justice. A good marine abides by the following code: 1. Unit 2. Corps 3. God and 4. Country For this code to be at its effective best, it must be governed by truth and justice. What happens when truth and justice fail to be active participants of this code? Justice has been defined in many ways...
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...Akhil Kaushal P According to The Transparency International 2006 Corruption Perceptions Index: • Most honest countries – Finland, New Zealand, Iceland, Denmark and Singapore • Most corrupt countries – Haiti, Guinea, Myanmar, Iraq, Bangladesh, Chad, Congo and Sudan • China, Brazil, Ghana, Senegal, Peru, Mexico, Saudi Arabia, India and Egypt all rank in the middle Lack of resources Explosive population growth Need stronger and more effective institutions Lack of democracy Ineffective judiciary Unfair elections Lack of free media From The Bulging Pocket and the Rule of Law: Corruption, Inequality, and Trust Inequality –> Low generalized trust & High in-group trust –> Corruption –> Inequality The dilemma of low trust in strangers and high trust only in your own group Inequality and in-group trust lead to clientelism This pattern is difficult to break Two types of inequality: Economic inequality Unfair legal system Makes it more difficult for the poor to have access to the legal system Shielding people at the top Democratic institutions are not sufficient to curb corruption Media consumption, centralization, federalism, the nature of the electoral system, the level of wages paid to officials also don't matter Structural reforms may not matter much for corruption, however: • Democratic countries are far less corrupt than nondemocracies • Countries with strong democratic...
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...Stand Your Ground Gerald Makey SOC 205 Strayer University The “Stand-your-ground law validates a person in using any physical force including deadly force, when they are not involved in illegal activity and is in a place where he or she has the right be, they have no obligation to haven and have the right to stand their ground. A quick breakdown of this law is that it give a person legal cover in the event that they find themselves in a certain situation in which their survival, or the preservation of their family necessitates them to stand their ground and use a weapon for defense. This law can be referenced back to the Supreme Court case Beard v. United States, 158 U.S. 550 (1895). It is defined in this case that, “A man assailed on his own grounds, without provocation, by a person armed with a deadly weapon and apparently seeking his life is not obliged to retreat, but may stand his ground and defend himself with such means as are within his control; and so long as there is no intent on his part to kill his antagonist, and no purpose of doing anything beyond what is necessary to save his own life, is not guilty of murder or manslaughter if death results to his antagonist from a blow given him under such circumstances (www.justia.com). In Houston, Texas a “Stand-your-ground” case has brought a lot of attention, but also a lot of controversy. In this case Raul Rodriguez was found guilty of killing his neighbor over a dispute over loud music. Rodriguez who was a retired...
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...Jacob Frederick 5-29-12 Buller Composition II Marijuana: Medicine or Menace? I have had strong feelings about this issue before it was even brought up as a topic for debate in our class. My opinion on the topic has not changed in the slightest, but I did learn a lot of interesting details concerning it. I have always felt that marijuana should be legalized, or at the very least, people with serious medical conditions should have access to it. And marijuana doesn’t even have to be legalized in my opinion, but it should definitely be decriminalized. I don’t think anyone who wants to smoke a plant that they grow themselves should have to suffer consequences, considering they are responsible in their recreational smoking. I do feel that if it were legalized, that there should be an acceptable age limit to buy and/or consume marijuana, comparable to that of alcohol. There are beneficial as well as harmful effects concerning marijuana, but that goes for a lot of things people do in everyday life. And I feel that a lot of time has been spent shining the spotlight on the harmful effects of marijuana, while little research has been done or even allowed, on the benefits of marijuana. While preparing for the debate, I encountered many sources on each end of the spectrum; including some in the middle. Many of the sources I looked at seemed rather credible, but others were most definitely biased. One example of a blatantly biased comment was, "Most pot smokers drink alcohol heavily...
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...that shape the decisions people or organisations make(Termpaper warehouse,2012).http://www.termpaperwarehouse.com/essay-on/Ethics-In-International-Marketing/53994. Today, law suits are filed against erring companies found wanting or in bridge of ethical standards which has increased the need of cautiousness in the way most companies project their image . It summarizes the natural rights and universal values of the equality of all men and women to the law of the land. It also covers concern for the natural environment, health and safety. Read more: http://www.businessdictionary.com/definition/ethics.html#ixzz28xWPwQco Ethics in marketing are the basic principles that governs the business practice of those involved in promoting their products to or services to consumers(Business dictionary.com). Sound marketing ethics however are those practices that do not impact negatively on the consumers. http://www.businessdictionary.com/definition/marketing-ethics.html Ethics has always been the bane of moral studies and value and has been in practice since the ancient times. (Napoleon,1804) in his 36 codes of conduct, noted that all citizens in France, irrespective of place of birth or social status is entitled to fair and equal treatment. As a branch of philosophy, ethics deals with established laws that guide human relationship and behaviour with emphasis on good sense of judgement. Scholars like Aristotle identified character as ''ethos'' which he described as the...
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